Truck-scale.



No. 837,965. PATENTED DEG. l1, 1906.

`o. 'w PARSELL. 'TRUCK SGALE-` APPLICATION FILED DEO.l 22,1903.

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UNITED STATES PATENT OFFIOE.

TRUCK-SCALE.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed December 22, 1903. Serial No. 186.167.

T0 @ZZ whom, t noa/y concern:

Be it known that I, ORLANDO I/V. PAnsELL, a citizen of the UnitedStates, residing at Flushing, in the county of Genesee and State 'ofMichigan, have invented certain new and platform, so that it will restupon the frame of the truck when it is not in use for weighmg.

The invention further consists in the construction of the levers and theconstruction of the beam, all as more fully hereinafter d escribed.

In the drawings, Figure l is a vertical central section through myimproved truckscale, showing the levers raised in position for weighing.Fig. 2 is a similar section showing the levers in their lower positionwith the platform resting on the frame when out of weighing position.Fig. 3 is a perspective view showing one of the levers and. part of theother and illustrating the manner of con structing the levers. Fig. 4 isa cross-section on line of Fig. 3. Fig. 5 is a cross-section on line yg/ of Fig. 3. Fig. 6 is a perspective view of the beam.

A is the scale-platform, which is also the platform of the truck, thetruck being formed of the side bars B and the cross-bars B, the sidebars being extended to form the usual handle C, as is well known inwarehousetrucks. A are the usual bearing-feet C, which vrest upon thepivots of the levers, as is usual in scale construction. Saidbearing-feet O are secured to the members B, which constitute the stopsfor abutting against the cross-bars B to limit the longitudinal movementof the platform. u

The levers I preferably construct as shown in Fig. 3, in which there areshown two triangular levers D D', suspended at the corners Upon theunder side of the platform` of the frame by the usual loops a andconnected at the middle by a connecting-loop E in the usualmanner ofconnecting-levers in the central portion of the scale. The lever D, Ipreferably form of three bars of band or tire iron b c (l, the bar bbeing a straight bar, the bar c extending at an angle thereto and havingan end portion e extending parallel with the end of the bar l), whilethe opposite end has the loop 7i formed therein, bearing against the barb and riveted to that bar and having on opposite sides of that loop theparallel portions i, separated from the bar b a sufficient distance toallow the pivots I' and Z being passed therethrough. The pivot r is thepivot with which the loopE engages in the lever D. The bar d is across-bar having its ends bent down, as shown in Fig. 3, and riveted tothe bars c and b near the ends.

In order to form a proper pivot-bearing on the ends of the lever, I formthe casting or blocks of metal F, which I secure upon the ends of thebars l) and c, as shown in Fig.3, and rivet or otherwise secure theblocks to the ends of these bars and secure the usual pivots therein forthe suspended loops and the bearing-feet C', as usual in scaleconstruction, and which, therefore, I need not further describe. Thelever D has similar blocks and cross-bars at its outer end, and at theinner end it is formed in the shapeof a loop F, through which loop Ipass the pivot m for the lower end of the loop E.

Extending from the lever D to the beam is a bar G, pivoted at one end tothe lever D and at the other end connected to the beam Hin the usualmanner. This bar G, with the lever D, forms what is known in scaleparlance as the long lever of the scale.

Between the middle portion of the bar G and the pivot Z at the inner endof the lever D, I arrange toggle-levers J, with a central rule-joint.

Pivoted to the end of the bar G near the beam is a lever Ii, preferablya bell-crank lever, one arm of which I connect by the rod K/ to theupper lever of the toggle J, so that this toggle may be straightened orbroken, as shown in Figs. l and 2, by operating the lever K.

I is a tie-bar connected to the end of the lever D at the toggleconnection therewith and at the other end to the outer end of the bar Gwith a slightly loose oint, as shown in Fig. l.

The parts being thus constructed, they op- IIO crate as follows: IVhenthe scale is being loaded, it is desired that the platform should restupon the frame of the truck, and the handle of the lever K is depressed,which will collapse the toggle into the position shown in Fig. 2,allowing the inner ends of the levers D and D to lower, and therebylowering the bearing-pivots thereof, consequently allowing the platformto descend until it rests upon the frame of the truck, as shown in Fig.2, and so that the load on the platform does not rest upon thescale-pivots. In this lower position of the levers the two short levershang Afrom their corner-loops and are prevented from going lower by thefact that they are tied together at the middle by the loop E. Now tolift the levers into weighing position the operator lifts upon the leverl, which straightens out `the toggle J into the position shown inFig. 1. rIhis raises the inner ends of both the levers D D and theirbearing-pivots, lifting the platform free from the frame, while theweight is transmitted from the levers D and Dl through the toggle J tothe bar G and thence to the beam, where it will be weighed in the usualmanner.

It will be observed that the lever D and the link I, together with. thebar G, form a substantially truss-shaped structure, of which the toggleJ forms the strut, so that when the scale is in weighing position thelong lever is formed by these parts and is, in effect, a truss ortruss-lever.

To make the beam II, I take a single bar of metal O and bend it at theends to form the vertical extensions P, and to these end cX- tensions Iconnect the upper beam member Q, and thus have a double beam formed oftwo pieces, and upon each member I apply a sliding poise n and 0, ofcourse applying the usual graduations to the beam members. Near one endof the lower beam member I screw on a block R, in which the beam-pivotsare secured, and between this block and the end of the beam I apply theusual counterbalance poise or adjusting poise S. This simpliiies theconstruction of the beam and considerably cheapens it.

The truck of course has the usual front axle T, with suitable wheels T',and at the other end suitable legs U to keep the platform clear from theiloor.

What I claim as my invention is- 1. In a scale, the combination of twolevers, D and D pivoted at their outer ends and looped together at theirinner ends, ol' a beam, a bar extending from the lever D to the beam, atoggle connection between this bar and said lever, and means connectedto the bar for straightening and breaking the toggle.

2. In a scale, the combination of the levers DD, a beam, the bar Gpivoted to the lever D and connected to said beam, the toggle J betweenthe bar G and lever D, the bellcrank lever K on the bar G, connected tothe toggle, for actuating the same, and the link I between the lever Dand the bar G.

3. In a scale, a lever comprising sections of bar-iron, metallic endblocks extending around the ends of the sections and the pivots therein.

4. In a scale, the combination of two levers pivoted at their outer endsto a suitable support, and looped together at their inner ends, a beam,a bar extending from the outer end of one of said levers to a pointadjacent the beam and connected to the latter, a toggle connectionbetween said bar and lever, and means for straightening and breaking thetoggle.

5. In a scale, the combination of levers, a beam, a bar operativelyassociated with one of said levers and the beam, a toggle between saidlever and bar, and means for actuating the toggle.

6. In a scale, the combination of levers, a beam, a bar operativelyassociated with one of said levers and the beam, a toggle between saidlever and bar, and means for actuating the toggle, including abell-crank lever.

7. In a scale, the combination of levers, a beam, a bar operativelyassociated with one of said levers and the beam, a toggle between saidlever and bar, means for actuating the toggle including a bell-cranklever, and a link between the lever and bar.

In testimony whereof I a'llix my signature in presence of two witnesses.4

ORLANDO WV. PARSELL.

IVitnesses JAMEs JONES, A. W. IIAMAKER.

